PDF malware analysis — malicious · f311bbe3ed0c1ae2

MALICIOUS

PDF

78.0 KB Created: 2020-07-31 13:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b2b3c5c5949446f575e4a4c1fad68a50 SHA-1: d67de729e293db176a00ba658dc266bb9388f7f6 SHA-256: f311bbe3ed0c1ae2e725386848ebb398b1e5478f8b337888c223cc62f12cbcb3

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating redirection to malicious infrastructure via ttraff.cc. Another critical heuristic, PDF_SEO_LINK_FARM, highlights the presence of a large number of external links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://ttraff.cc/pify?keyword=logical+fallacies+list+pdf
- http://files.columbiapresbyterianchurch.com/uploads/1/3/0/7/130776206/togixutuwo-jebudepog.pdf
- http://files.capstoneonline.com/uploads/1/3/0/8/130814596/cdb1abea4c8dc6.pdf
- http://files.crossfirerec.com/uploads/1/3/1/3/131398406/tipumuju.pdf
- https://cdn.shopify.com/s/files/1/0428/9842/3967/files/wugejijixabavoxobak.pdf
- https://cdn.shopify.com/s/files/1/0432/8102/3132/files/3475908914.pdf
- https://cdn.shopify.com/s/files/1/0427/9464/7719/files/3079937197.pdf
- https://cdn.shopify.com/s/files/1/0440/8688/6552/files/lufofuxito.pdf
- https://cdn.shopify.com/s/files/1/0436/8482/3205/files/72880608662.pdf
- https://cdn.shopify.com/s/files/1/0429/3348/5727/files/50116834561.pdf
- https://cdn.shopify.com/s/files/1/0430/3588/5721/files/roweka.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46905239833.pdf
- https://cdn.shopify.com/s/files/1/0431/0325/6737/files/51580750429.pdf
- https://cdn.shopify.com/s/files/1/0431/6377/9240/files/86423151771.pdf
- https://cdn.shopify.com/s/files/1/0431/2878/3002/files/kebiniririnimomoka.pdf
- https://cdn.shopify.com/s/files/1/0436/5520/0918/files/nupuzoxalinivozexoxifu.pdf
- https://cdn.shopify.com/s/files/1/0437/1388/8424/files/60964868872.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e1d6.bin` `0c7915a9c4be11b5cbb7fca413ca0dfef971ba58cf87841a4d48b45f3040ac25`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1D6	4848 bytes
`font_01_sfnt_off0000f265.bin` `276a6864a501bad14a2b14173282e77cf08400c86dee44416dab77857d8be3e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF265	10188 bytes
`font_02_sfnt_off0001157a.bin` `a0852c4690a6c7c4be107c8faaea32186891696821b3a96aec1037a99786b2f1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1157A	16076 bytes

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